50 lines
876 B
Go
50 lines
876 B
Go
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package clockwork
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import (
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"sync"
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"testing"
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"time"
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)
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// my_func is an example of a time-dependent function, using an
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// injected clock
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func my_func(clock Clock, i *int) {
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clock.Sleep(3 * time.Second)
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*i += 1
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}
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// assert_state is an example of a state assertion in a test
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func assert_state(t *testing.T, i, j int) {
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if i != j {
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t.Fatalf("i %d, j %d", i, j)
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}
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}
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// TestMyFunc tests my_func's behaviour with a FakeClock
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func TestMyFunc(t *testing.T) {
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var i int
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c := NewFakeClock()
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var wg sync.WaitGroup
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wg.Add(1)
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go func() {
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my_func(c, &i)
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wg.Done()
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}()
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// Wait until my_func is actually sleeping on the clock
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c.BlockUntil(1)
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// Assert the initial state
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assert_state(t, i, 0)
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// Now advance the clock forward in time
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c.Advance(1 * time.Hour)
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// Wait until the function completes
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wg.Wait()
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// Assert the final state
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assert_state(t, i, 1)
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}
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